how deep to bury duckweed with an excavator

Question

To kill duckweed, how deep must it be buried? We are going to use a digger, so can be quite deep.

Answer 1

I was unable to find any information about burying Duckweed.
Here is a link with more information on Duckweed.
I would also talk with your local County Extension Office.

https://www.gardeningknowhow.com/plant-problems/weeds/duckweed-control.htm